JOURNAL OF KUFA FOR CHEMICAL SCIENCES

A new chelating ion-exchange resin consist of a macroreticular poly [styrene-co-(divinylbenzene)] (XAD-4) copolymer and containing 2[[2-(hydroxy) benzylidene] amino] benzamidoxime ligands as the functional group has been synthesized and its employ for the concentration and separation of metals was studied. It is highly stable in acidic and alkaline solutions. The total adsorption ability of the resin for some metal ions like Fe(III), Cu(II), Ni(II), Hg(II), Cd(II), Zn(II), Pd (II), Mo (VI), V(V) and U(VI) as a function of pH has been determined over pH (1.0 -7.5). Sorption kinetics of metals was achieved by using batch method. These metal ions were quantitatively occupied and resumed by [0.5M] Sodium carbonate as a suitable eluting for uranium (V1); for palladium (II) HCl conc., followed by a dilute acidic solution of thiourea; for the other metal ions, 2M hydrochloric acid]. The resin exhibits the important characteristics that are good chemical stability, high selectivity, and quick equilibration with the metal ion making it useful for fast enrichment of these ions by column and the resin reused repeatedly. The most metal ions concentrations were measured by atomic absorption spectrograph (AAS).

azo imidazole ligand has been prepared by diazolation of 2-amino benzoic acid and coupling the diazonium salt that formed with 4,5diphenyl imidazole as coupling base, the complexes of Ni(II), Cu(II), Zn(II), Hg(II) synthesized by mixing a calculated amount of these ion salt solutions with a mixture of azo imidazole ligand that prepared and azo pyridyl dye (PAN) solution with molar ratio (1: 1: 1). Several spectral techniques used to characterization these compounds include: FT-IR , UV-VIS the magnetic susceptibility ,C.H.N analysis ,atomic absorption and molar conductivity, The results confirmed both ligands behave as tridentale ligands type (N,N,O) and all complexes of mixed tridentate azo ligands that prepared have octahedral geometry. The antimicrobial activity of the ligands and their mixed ligand complexes was studied against five types of pathogemic bacteria (Enterococcus fecalius , Staphylococcus haemolyticus , Staphylococcus warneri, Escherichia coli, Klebsilla Pneumonia). Furthermore , the antifungal activity against two fungi (Aspergillus flavus and Aspergillus terreus) was studied .

Chalcone derivatives were synthesized by reaction of some benzaldehyde derivatives with thiophene derivatives, The products were allowed to react with urea, thiourea, o-phenylendiamine and 2,4-dinitrophenylhydrazine, to give the heterocyclic derivatives of oxazine, thiazine, diazepine and pyrazole respectively. The chemical reaction were followed up by using thin layer chromatographic method. The characterization of newly synthesized heterocyclic compounds were established on the basis of their melting points and the spectral data like FT-IR, 13CNMR and 1HMNR (for some of them).

This research includes synthesized of heterocyclic compounds of the interaction (1-amino-2-naphthol-4-sulfonic acid) with (isatin ,3-hydroxy-5-methyl benzaldehyde) These compounds were characterized by melting point and FT-IR spectroscopy.and the biologicl activity was evaluated against four kinds of bacteria two positive and two negative.

This paper involves synthesis some new imidazol derivatives were synthesized reaction of p-nitro Aniline with 3-chloro 2,4-pentadione with KSCN to give [1-(4-Nitro Phenyl)-2-Mercapto-4-methyl-1H-imidazol-5-yl)]-ethanone(1). Which reaction with different aromatic aldehydes according to claisen. Schmidt condensation to get a chalcones were reacted with hydrazine Hydrate to obtained the pyrazol derivatives and (4a-c) was synthesized by the treatment of pyrazol derivatives with benzoyl chloride in TEA. The chalcones were cyclized with the hydroxyl amine hydro chloride to give an iso oxazole derivatives which condensed with furan-2-aldehyde to obtain compounds(6a-c). These compounds were characterized using FTIR and 1H-NMR. Anti microbial study in vitro screened against several bacterial by cup plate agar diffusion method and also very good antibacterial activity was observed.

The present work includes, synthesis of novel (Schiff's) compounds in high yield. Which reacts with phthalic anhydride, Maleic anhydride, succunic anhydride, sodium azid, leucin amino acid and alanine amino acid via refluxing of reactions to produce various heterocycles (seven and five) members rings like (benzoxazpine, oxzaepine, tetrazol, and imidazoldin), the structure of the new synthesized compounds are monitored by (TLC) and identified by many techniques (FTIR,) and melting points

The research includes preparation of new heterocyclic derivatives such (oxazepine and imidazolodine-2-one),starting from 2-amino thiazole. This work is divided in two parts:
Part one: include three steps: The first step includes the synthesis of Schiff base derivatives from the reaction (2-amino thiazole) with 4-amino benzaldehyde ,while the second step include the reaction of Schiff base with isatine to form new Schiff base ,the third step includes reaction of maleic and phthaleic anhydride and tyrosine amino acid with the prepared Schiff base to form various five and seven heterocyclic rings.
Part two include two steps:
The first step includes the synthesis of Schiff base derivatives by the reaction of (2-amino thiazol) with acetyl acetone, then the reaction involves prepared of Schiff base with maleic and phthaleic anhydride to form seven membered ring ; All these compounds were characterized by ( FT-IR)and (C.H.N) and some of them by (1H-NMR).